The Supreme Court reinstates murder conviction for NYC boy Etan Patz, one of the first missing kids on a milk carton

The Supreme Court on Monday reinstated a murder conviction in the 1979 disappearance of 6-year-old Etan Patz.

The justices, by a 6-3 vote, granted an appeal from New York prosecutors who had urged them to undo a federal appeals court decision that overturned the verdict. The three liberal justices dissented.

Prosecutors had been preparing to try the man, Pedro Hernandez, for a third time. His first trial ended in a mistrial.

The unanimous panel of the U.S. Court of Appeals for the Second Circuit reversed Hernandez’ murder and kidnapping conviction in the second trial because of how the judge had answered a question from jurors.

Manhattan District Attorney Alvin Bragg had called the basis for overturning the conviction “a slender reed” that essentially ignored a five-month-long trial with 66 witnesses.

The justices agreed, in an unsigned opinion, that federal courts should not second-guess state courts under a 1996 federal law that was intended to reduce federal court oversight of state criminal trials.

“The Second Circuit exceeded its authority in holding that Hernandez is entitled to relief,” the justices wrote.

Hernandez, 64, has been serving a sentence of 25 years to life in prison.

Bragg hailed the high court’s decision. “This office has remained steadfast in its pursuit of justice for Etan and the Patz family and will continue to stand by this important conviction,” Bragg, a Democrat, said in a statement.

Hernandez’ lawyers said they were “terribly disappointed” by the ruling. “We firmly believe that an innocent man is in jail for a crime that he did not commit,” attorneys Harvey Fishbein and Alice Fontier said.

Hernandez admitted to the crime under police questioning, but his lawyers say he confessed falsely because of a mental illness that sometimes made him hallucinate. They emphasized that the admission came after police queried him for about seven hours before reading him his rights and recording the interview. Hernandez then repeated his confession on tape, at least twice.

Etan vanished while walking to his downtown Manhattan school bus stop on May 25, 1979. Hernandez worked at a nearby convenience shop at the time, but the Maple Shade, New Jersey, resident didn’t become a suspect until 2012.

Etan was among the first missing children ever to appear on milk cartons, and the anniversary of his disappearance became National Missing Children’s Day.

Hernandez already has been tried twice. A jury deadlocked in 2015, and then a different panel of jurors convicted him at a 2017 retrial.

During deliberations, the 2017 jurors asked a complicated question: If they decided Hernandez didn’t confess voluntarily when he hadn’t been read his rights yet, must they disregard his other confessions? The then-judge responded simply, “the answer is no.” The jury went on to convict.

In overturning that verdict, the appeals court said the jury’s question should have gotten a more fulsome answer, including the possibility of discounting all the confessions.

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Associated Press writer Jennifer Peltz contributed to this report from New York.

This story was originally featured on Fortune.com